Re: [boost] Units: brief review

From: Matthias Schabel (boost_at_[hidden])
Date: 2007-03-26 18:50:49

Phil,

> simple awk script to do the arithmetic.  If dimensional analysis  
> had been available, it would have been a useful confidence builder  
> that the code was doing the right thing.  The problem was this: I  
> have measured the temperatures on the surfaces of an electrical  
> device - a power supply - and I want to calculate the power  
> dissipated.  The maths is simple: power = temperature difference to  
> atmosphere * area * heat transfer coefficient.  I tried to write  
> this using the units library.

If you don't need to store the heat transfer coefficient, you can  
make this a one-liner without worrying about the type of the HTC  
itself (assuming you've defined quantities for dT and A already) :

quantity<power>	P = dT*A*7.5*watts/kelvin/square_meter;

Matthias